package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.utils.thread.WmThreadLocalUtil;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.Date;
import java.util.UUID;


@Slf4j
@Service
@Transactional
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {


    @Autowired
    private FileStorageService fileStorageService;

    /**
     * 图片上传
     * @param multipartFile
     * @return
     */
    @Override
    public ResponseResult uploadPicture(MultipartFile multipartFile) {
        // 1.检查参数
        if (multipartFile == null || multipartFile.getSize() == 0){

            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        // 2.上传图片到minio
        String fileName = UUID.randomUUID().toString().replace("-", "");

        String originalFilename = multipartFile.getOriginalFilename();

        String postfix = originalFilename.substring(originalFilename.lastIndexOf("."));

        String fileId = null;
        try {
            fileId = fileStorageService.uploadImgFile("", fileName + postfix, multipartFile.getInputStream());

            log.info("上传成功到minio：fileId: {}",fileId);

        } catch (IOException e) {
            e.printStackTrace();
            log.error("上传失败到minio");
        }

        // 3. 保存到数据库

        WmMaterial wmMaterial = new WmMaterial();

        wmMaterial.setUserId(WmThreadLocalUtil.getUser().getId());

        wmMaterial.setUrl(fileId);

        wmMaterial.setIsCollection((short) 0);

        wmMaterial.setType((short) 0);

        wmMaterial.setCreatedTime(new Date());

        save(wmMaterial);

        // 4.返回结果


        return ResponseResult.okResult(wmMaterial);
    }


    /**
     * 图片列表
     * @param dto
     * @return
     */

    @Override
    public ResponseResult findList(WmMaterialDto dto) {

        // 1. 检查参数
        dto.checkParam();

        // 2. 分页查询
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        // 是否收藏
        if (dto.getIsCollection() != null && dto.getIsCollection() == 1){
            lambdaQueryWrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }
        // 当前用户
        lambdaQueryWrapper.eq(WmMaterial::getUserId,WmThreadLocalUtil.getUser().getId());

        // 按照时间倒序

        lambdaQueryWrapper.orderByDesc(WmMaterial::getCreatedTime);
        page = page(page, lambdaQueryWrapper);

        PageResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(),(int)page.getTotal());

        responseResult.setData(page.getRecords());

        // 3. 返回结果
        return responseResult;
    }
}
